139025923 has 8 divisors (see below), whose sum is σ = 142895808. Its totient is φ = 135185064.

The previous prime is 139025879. The next prime is 139025927. The reversal of 139025923 is 329520931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139025923 - 2¹⁷ = 138894851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139025927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2640 + ... + 16882.

It is an arithmetic number, because the mean of its divisors is an integer number (17861976).

Almost surely, 2^139025923 is an apocalyptic number.

139025923 is a deficient number, since it is larger than the sum of its proper divisors (3869885).

139025923 is a wasteful number, since it uses less digits than its factorization.

139025923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14513.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 139025923 is about 11790.9254513800. The cubic root of 139025923 is about 518.0423470794.

The spelling of 139025923 in words is "one hundred thirty-nine million, twenty-five thousand, nine hundred twenty-three".